Mahlon iiamlin



M. HAMLIN.

SBGTIONAL GRATE. No. 430,943. Patented June 24, 1890.

UNITED STATES PATENT' Cerros.

MAHLON HAMLIN, OF CATAW'ISSA, PENNSYLVANIA, ASSIGNOR TO THE I-IAM- LIN CAR VHEEL AND MANUFACTURING COMPANY, OF SAME PLACE.

SECTIONAL GRATE.

SPECIFICATION forming part of Letters Patent No. 430,943, dated J une 24, 1890.

Application tiled January 14, 1890. Serial No. 336907. (No model.)

To all whom it may concern.-

Be it known that I, MAHLON HAMLIN, a citizen of the United States, residing at Cata- Wissa, Columbia county, and State of Pennsylvania, have invented certain new and useful` Improvements in Sectional Crates7 of Which the following is so full, clear, and exact description as Will enable others skilled in the art to which my invention appertains to make and use the same, reference being had to the accompanying drawings, in Which-n Figure l is alongitudinal section of my improved grate and its support. Fig. 2 is a top plan view of one of the sections. Fig. 8 is a detail end view of the support. Fig. et is an end elevation of one of the sections.

The object of my invention is to provide a grate and grate-support by the use of which the greatest amount of complete combustion of the fuel will be obtained with the least Waste of fuel and material and with the least expense of material in the grate and its support and of fuel used.

Another object of my invention is to provide a grate by .the use of which there will be no dead spots in the bed of coals on the grate.

To this end my invention consists in the novel construction and arrangement of parts, which Will be hereinafter explained, and particularly pointed out in the claims at the end of the specification.

In the accompanying drawings, A designates the grate-support, which consists of a longitudinal truss provided With depressions a, adapted to fit over supports for the same.

B designates the end sections of the sectional grate. j

C designates the central section of the sectional grate.

The grate-support A is provided With vertical iiues D D7 the upper ends of Which are surrounded by projecting bosses E E. The lower face of the grates are in each instance provided with projecting perforated bosses or sockets F F, which are adapted to slip down over the bosses E.

The sections of the grate are provided with fines G Cr, which register with the vertical flues D D in the grate support, as shown clearly in Fig. 1.

The tops of the sections B and B, respectively, are provided with depressions b b,which fit over corresponding projections c c, to secure them against accidental displacement at the end.

The sections B B and C are provided With grooves on their upper faces Which radiate `from the perforations G in the sections to the longitudinal slots I I or 0c as shown in Fig. 2. The advantages of such construction are obvious, for should the perforations Gr become covered with coal the grooves Will allow of the free passage of the air.

From the foregoing it will be seen at a glance that the fuel used will be subjected to a direct draft from below through the perfor-ations I I and through the perforations D D and Gr G, thusinsuring complete combustion through` out the bed of coals on the grate.

I do not Wish to be understood as limiting myself to the exact construction and proportion shown, as the same may be varied Without departing from the spirit of my invention and Without interfering With its usefulness.

Having described the obj ects,uses, and advantages of my device, what I desire to secure by Letters Patent, and What I therefore claim, is

I. The herein-described sectional grate and support, consisting of a main truss made with vertical openings and projecting perforated bosses, in combination With sections of grate provided With bosses adapted to fit over the bosses on the truss and correspondingly perforated, substantially as and for the purposes specified.

2. The herein-described sectional grate and support, consisting of a truss provided with projecting bosses on the top and supplemental projections at the end, in combination With sections of grate provided With a boss corresponding with the bosses on the truss and adapted to engage therewith, and supplemental depressions to engage with the suppleinentai projections at the end of the grate, ward away from said opening, substantially 1o and suitable air-passages to admit of a. draft as and for the purpose specified.;

from beneath, substantially as and for the In testimony whereof I affix my signature purpose specified. in the presence of two Witnesses.

3. The combination of atrnss provided with MAHLON HAMLIN vertical openings and a section of grate provided Witha corresponding opening and hav- Y Witnesses: ing radiating grooves extending from theup- JONATHAN CILLEY,

per port-ion of the opening in the grate out- CHAS. E. BARBER. 

